How can I remove letter-spacing for the last letter of an element in CSS?

Here's the image in question of my HTML page. The text menu is inside a right aligned div, and has 1.2em letter spacing. Is there a pseudo-selector for this? I would not like to have to resort to relative positioning.

I would love the text menu to end where the block ends.

I've already marked a best answer, but I was asked for the markup regardless by CodeBlock. Here it is.

<div class="sidebar">
        <span class="menuheader">MENU</span>
        <ul>
        <li><a href="#content">Content</a></li>
        <li><a href="#attachments">Attachments</a></li>
        <li><a href="#subpages">Sub-pages</a></li>
        <li><a href="#newsubpage">New sub-page</a></li>
        </a></ul>
</div>

.sidebar{
color: rgb(150,93,101);
display: inline;
line-height: 1.3em;
position: absolute;
top: 138px;
width: 218px;
}

.menuheader{
letter-spacing: 1.1em;
margin: -1.2em;
text-align: right;
}

Solution 1:

You can set your element to have a right margin of -1.2em, which would counteract the letter spacing.

e.g.

.menu-header-selector {
  display:block;
  letter-spacing:1.2em;
  margin-right:-1.2em;
  text-align:right;
}

To answer your question regarding pseudo-selector, there isn't a per character pseudo-selector as far as I'm aware. (EDIT: Scratch that, there's the :First-Letter selector, which Jonas G. Drange pointed out).

EDIT: You can find a basic sample here: http://jsfiddle.net/teUxQ/

Solution 2:

I would call this a browser bug, actually. The spec says it's the spacing between characters, while your browser (and mine) seem to be changing the spacing after characters. You should submit a bug report.